Hi! first and foremost welcome to the world of hdr!
Check out this site.. It has alot of amazing photos to get you inspired..
This site has all the tutorials to get you started in HDR. Many of them are very good.
Already mentioned in this post but it really is one of the best to learn from..
Something from me, Not as great as those in the links.. HDR Macro. =)
Oh yeah.. experiment alot! Plus... Use tools in photoshop.. It's not good enough to just take photos with different exposures and put them in photomatix and thats that.. You have to dodge the photo maybe remove halo. remove noise perhaps add colour and whatever.. Have fun and watch your skills grow!